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Finding the Fourth Proportional to 30,899.09, 42,641.03 and 16,751.97

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Solution

The fourth proportional to 30,899.09, 42,641.03 and 16,751.97 is: 23,117.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,899.09 : 42,641.03 = 16,751.97 : x
  2. Step 2: Convert to fraction form
    30,899.09/42,641.03 = 16,751.97/x
  3. Step 3: Cross multiply
    30,899.09x = 42,641.03 × 16,751.97
  4. Step 4: Simplify right side
    30,899.09x = 714,321,255.33
  5. Step 5: Solve for x
    x = 714,321,255.33/30,899.09
  6. Step 6: Final answer
    x = 23,117.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.